GridWB3 V6: Free TradingView Indicator (Pine Script)

Add It to Your TradingView Chart

1Copy the scriptPress Copy script above, or the copy button on the code below.
2Open the Pine EditorOpen a TradingView chart and choose Pine Editor at the bottom of the screen.
3Paste over the templateCreate a new indicator, select all of the template text and paste. Press Save and give it a name.
4Add it to the chartPress Add to chart, then adjust the settings with the gear icon next to its name.

Source Code

175 lines of Pine Script v6 from GridWB3_v6.txt, published under MPL-2.0 (file header). Keep the author's credit and licence lines when you reuse it.

GridWB3_v6.txt

// This Pine Script® code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © ekmchiu

//@version=6
indicator("GridWB3 V6", "GridWB3 V6", overlay = true, max_lines_count = 500, max_boxes_count = 50)

// --- Struct Definition ---
type SymbolConfig
    int   t1
    float p1
    int   t2
    float p2
    int   grids

// --- Function to Calculate Anchors Dynamically ---
getDynamicConfig(int startTimeInput, int endTime, int defaultGrids) =>
    var float maxClose = na
    var float minClose = na
    var int firstAvailableTime = na

    // Capture the exact timestamp of the very first bar available on the chart
    if barstate.isfirst
        firstAvailableTime := time

    // Resolve start time: Use the user's input start date, or fallback to the symbol's first available bar if it started later
    int actualStartTime = math.max(startTimeInput, firstAvailableTime)

    // Scan historical bars starting from the actual start time
    if time >= actualStartTime
        if na(maxClose) or close > maxClose
            maxClose := close
        if na(minClose) or close < minClose
            minClose := close

    // Fallbacks if data before startTime is incomplete
    float safeP1 = na(maxClose) ? high : maxClose
    float safeP2 = na(minClose) ? low  : minClose
    
    // t1 is the right edge (endTime), t2 is the resolved left edge (actualStartTime)
    SymbolConfig.new(endTime, safeP1, actualStartTime, safeP2, defaultGrids)

// --- Dynamic Date Inputs ---
grpCalc   = "Auto-Calculation Settings"
startDate = input.time(timestamp("2024-12-20 00:00:00 +0800"), "Start Date (Lowest Price)", group = grpCalc)
endDate   = input.time(timestamp("2027-12-17 00:00:00 +0800"), "End Date (Target Grid Edge)", group = grpCalc)
autoGrids = input.int(3, "Grids Count", minval = 1, maxval = 7, group = grpCalc)

// --- Execute Dynamic Calculation ---
SymbolConfig cfg = getDynamicConfig(startDate, endDate, autoGrids)

int   t1    = cfg.t1
float p1    = cfg.p1
int   t2    = cfg.t2
float p2    = cfg.p2
int   grids = cfg.grids

// --- Edge Fine-Tuning & Style Inputs ---
edgeAdjust = input.int(0, "Fine-tune right edge (bars)", minval = -10, maxval = 10, group = "Grid",
     tooltip = "Shift the future right edge: -N = N bars left, +N = N bars right.")

gridCol    = input.color(color.new(color.blue, 0),  "Color A (grid 0,2,4...)", group = "Style")
altCol     = input.color(color.new(color.red, 0),   "Color B (grid 1,3,5...)", group = "Style")
diagCol    = input.color(color.new(color.blue, 0),  "Slope color",            group = "Style")
fillCol    = input.color(color.new(color.gray, 92), "Box fill",               group = "Style")
gridTransp = input.int(40, "Grid transparency", minval = 0, maxval = 100, group = "Style")
diagTransp = input.int(40, "Slope transparency", minval = 0, maxval = 100, group = "Style")
gridW      = input.int(1, "Grid width",  minval = 1, maxval = 4, group = "Style")
diagW      = input.int(1, "Slope width", minval = 1, maxval = 4, group = "Style")

// --- Geometry ---
tLeft  = math.min(t1, t2)
tRight = math.max(t1, t2)
pTop   = math.max(p1, p2)
pBot   = math.min(p1, p2)
float dh = pTop - pBot

int biL      = ta.valuewhen(time <= tLeft,  bar_index, 0)
int biR_past = ta.valuewhen(time <= tRight, bar_index, 0)

colGrid = color.new(gridCol, gridTransp)
colAlt  = color.new(altCol,  gridTransp)
colDiag = color.new(diagCol, diagTransp)

// --- Drawing Logic ---
if barstate.islast

    // Right edge bar index
    int biR = biR_past
    if tRight > time
        if timeframe.in_seconds() == 86400
            int calDays  = int(math.ceil((tRight - time) / 86400000))
            int weekends = int(math.floor(calDays / 7)) * 2
            int futBars  = math.max(0, calDays - weekends + edgeAdjust - 1)
            biR := bar_index + futBars
        else
            biR := bar_index + int(math.round((tRight - time) / (timeframe.in_seconds() * 1000.0)))

    int span = biR - biL

    // Outer box
    box.new(biL, pTop, biR, pBot,
         border_color = colGrid, border_width = gridW, bgcolor = fillCol,
         xloc = xloc.bar_index)

    // Unit boundaries
    if grids > 1
        for i = 1 to grids - 1
            int bx = biL + int(math.round(span * i / float(grids)))
            line.new(bx, pTop, bx, pBot, xloc = xloc.bar_index, color = colGrid, width = gridW)

    // Per unit grid & slopes
    for i = 0 to grids - 1
        int xL = biL + int(math.round(span * i / float(grids)))
        int xR = biL + int(math.round(span * (i + 1) / float(grids)))
        int wu = xR - xL

        int q1 = xL + int(math.round(wu * 0.25))
        int q2 = xL + int(math.round(wu * 0.50))
        int q3 = xL + int(math.round(wu * 0.75))
        int xM = q2

        lineCol = i % 2 == 0 ? colGrid : colAlt

        float yB = pBot
        float yT = pTop
        float yM = pBot + dh * 0.5

        // Horizontal lines
        line.new(xL, pBot + dh * 0.25, xR, pBot + dh * 0.25, xloc = xloc.bar_index, color = lineCol, width = gridW)
        line.new(xL, pBot + dh * 0.5,  xR, pBot + dh * 0.5,  xloc = xloc.bar_index, color = lineCol, width = gridW)
        line.new(xL, pBot + dh * 0.75, xR, pBot + dh * 0.75, xloc = xloc.bar_index, color = lineCol, width = gridW)

        // Vertical lines
        line.new(q1, pTop, q1, pBot, xloc = xloc.bar_index, color = lineCol, width = gridW)
        line.new(q2, pTop, q2, pBot, xloc = xloc.bar_index, color = lineCol, width = gridW)
        line.new(q3, pTop, q3, pBot, xloc = xloc.bar_index, color = lineCol, width = gridW)

        // Slopes
        line.new(xL, yT, xM, yB, xloc = xloc.bar_index, color = colDiag, width = diagW)
        line.new(xL, yT, xR, yM, xloc = xloc.bar_index, color = colDiag, width = diagW)
        line.new(xL, yT, xR, yB, xloc = xloc.bar_index, color = colDiag, width = diagW)
        line.new(xL, yB, xM, yT, xloc = xloc.bar_index, color = colDiag, width = diagW)
        line.new(xL, yB, xR, yM, xloc = xloc.bar_index, color = colDiag, width = diagW)
        line.new(xL, yB, xR, yT, xloc = xloc.bar_index, color = colDiag, width = diagW)
        line.new(xR, yT, xM, yB, xloc = xloc.bar_index, color = colDiag, width = diagW)
        line.new(xR, yT, xL, yM, xloc = xloc.bar_index, color = colDiag, width = diagW)
        line.new(xR, yT, xL, yB, xloc = xloc.bar_index, color = colDiag, width = diagW)
        line.new(xR, yB, xM, yT, xloc = xloc.bar_index, color = colDiag, width = diagW)
        line.new(xR, yB, xL, yM, xloc = xloc.bar_index, color = colDiag, width = diagW)
        line.new(xR, yB, xL, yT, xloc = xloc.bar_index, color = colDiag, width = diagW)

    // --- Bottom-Left Info Table ---
    var table infoTable = table.new(position = position.bottom_right, columns = 2, rows = 6, 
                                    bgcolor = color.new(color.yellow, 20), 
                                    border_width = 1, border_color = color.gray)
    
    // Header
    table.cell(infoTable, 0, 0, "Param", bgcolor = color.navy, text_color = color.white, text_size = size.small)
    table.cell(infoTable, 1, 0, syminfo.ticker + " Config", bgcolor = color.navy, text_color = color.white, text_size = size.small)

    // Values
    table.cell(infoTable, 0, 1, "t1 (End Time)", text_color = color.gray, text_size = size.small)
    table.cell(infoTable, 1, 1, str.format_time(t1, "yyyy-MM-dd"), text_color = color.white, text_size = size.small)

    table.cell(infoTable, 0, 2, "p1 (High Price)", text_color = color.gray, text_size = size.small)
    table.cell(infoTable, 1, 2, str.tostring(p1, "#.##"), text_color = color.green, text_size = size.small)

    table.cell(infoTable, 0, 3, "t2 (Start Time)", text_color = color.gray, text_size = size.small)
    table.cell(infoTable, 1, 3, str.format_time(t2, "yyyy-MM-dd"), text_color = color.white, text_size = size.small)

    table.cell(infoTable, 0, 4, "p2 (Low Price)", text_color = color.gray, text_size = size.small)
    table.cell(infoTable, 1, 4, str.tostring(p2, "#.##"), text_color = color.red, text_size = size.small)

    table.cell(infoTable, 0, 5, "Grids", text_color = color.gray, text_size = size.small)
    table.cell(infoTable, 1, 5, str.tostring(grids), text_color = color.yellow, text_size = size.small)

Overview

GridWB3 V6 takes the highest and lowest close since a chosen start date, falls back to the first available bar when the symbol's history starts later, and uses an end date as the right edge. The box is divided into one to seven alternating units with diagonal lines. A bar offset fine-tunes the right edge, and colours and widths are adjustable. It is a drawing aid and gives no signals.

Grid bounds from closes since a start date
Fallback to first available bar for short histories
One to seven alternating grid units
Right-edge adjustment and style options

Details

Published by

cckmchiu-gapps on GitHub

Code credit

ekmchiu, as written in the script's header

Type

Indicator, Pine Script v6

Draws

On the price chart

Markets

Any symbol

Timeframes

Any timeframe

Risk Notes

No repainting, lookahead or stacked entries were found in its code or README. That says nothing about how well it works: test it first.

File

GridWB3_v6.txt

Repository

github.com/cckmchiu-gapps/pinescripts. See its other scripts in the library

Settings

The inputs you can change from the gear icon on the chart. Defaults are the author's.

Setting	Type	Default	Variable
Start Date (Lowest Price)	`time`	`timestamp("2024-12-20 00:00:00 +0800")`	`startDate`
End Date (Target Grid Edge)	`time`	`timestamp("2027-12-17 00:00:00 +0800")`	`endDate`
Grids Count	`int`	`3`	`autoGrids`
Fine-tune right edge (bars)	`int`	`0`	`edgeAdjust`
Color A (grid 0,2,4...)	`color`	`color.new(color.blue, 0)`	`gridCol`
Color B (grid 1,3,5...)	`color`	`color.new(color.red, 0)`	`altCol`
Slope color	`color`	`color.new(color.blue, 0)`	`diagCol`
Box fill	`color`	`color.new(color.gray, 92)`	`fillCol`
Grid transparency	`int`	`40`	`gridTransp`
Slope transparency	`int`	`40`	`diagTransp`
Grid width	`int`	`1`	`gridW`
Slope width	`int`	`1`	`diagW`

Third-party code. ForexR did not write, test or endorse this script, and the summary above was generated automatically from its code and README. Indicators describe the past, and a strategy's backtest can look better than live trading, especially when a script repaints. Check it in the Strategy Tester and on a demo account before you rely on it.

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